if_fwe.c revision 124169
1/* 2 * Copyright (c) 2002-2003 3 * Hidetoshi Shimokawa. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * 16 * This product includes software developed by Hidetoshi Shimokawa. 17 * 18 * 4. Neither the name of the author nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $FreeBSD: head/sys/dev/firewire/if_fwe.c 124169 2004-01-06 14:30:47Z simokawa $ 35 */ 36 37#include "opt_inet.h" 38 39#include <sys/param.h> 40#include <sys/kernel.h> 41#include <sys/malloc.h> 42#include <sys/mbuf.h> 43#include <sys/socket.h> 44#include <sys/sockio.h> 45#include <sys/sysctl.h> 46#include <sys/systm.h> 47#include <sys/module.h> 48#include <sys/bus.h> 49#include <machine/bus.h> 50 51#include <net/bpf.h> 52#include <net/ethernet.h> 53#include <net/if.h> 54#include <net/if_arp.h> 55#include <net/if_vlan_var.h> 56 57#include <dev/firewire/firewire.h> 58#include <dev/firewire/firewirereg.h> 59#include <dev/firewire/if_fwevar.h> 60 61#define FWEDEBUG if (fwedebug) if_printf 62#define TX_MAX_QUEUE (FWMAXQUEUE - 1) 63 64/* network interface */ 65static void fwe_start (struct ifnet *); 66static int fwe_ioctl (struct ifnet *, u_long, caddr_t); 67static void fwe_init (void *); 68 69static void fwe_output_callback (struct fw_xfer *); 70static void fwe_as_output (struct fwe_softc *, struct ifnet *); 71static void fwe_as_input (struct fw_xferq *); 72 73static int fwedebug = 0; 74static int stream_ch = 1; 75static int tx_speed = 2; 76static int rx_queue_len = FWMAXQUEUE; 77 78MALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface"); 79SYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RW, &fwedebug, 0, ""); 80SYSCTL_DECL(_hw_firewire); 81SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0, 82 "Ethernet emulation subsystem"); 83SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RW, &stream_ch, 0, 84 "Stream channel to use"); 85SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, tx_speed, CTLFLAG_RW, &tx_speed, 0, 86 "Transmission speed"); 87SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len, 88 0, "Length of the receive queue"); 89 90TUNABLE_INT("hw.firewire.fwe.stream_ch", &stream_ch); 91TUNABLE_INT("hw.firewire.fwe.tx_speed", &tx_speed); 92TUNABLE_INT("hw.firewire.fwe.rx_queue_len", &rx_queue_len); 93 94#ifdef DEVICE_POLLING 95#define FWE_POLL_REGISTER(func, fwe, ifp) \ 96 if (ether_poll_register(func, ifp)) { \ 97 struct firewire_comm *fc = (fwe)->fd.fc; \ 98 fc->set_intr(fc, 0); \ 99 } 100 101#define FWE_POLL_DEREGISTER(fwe, ifp) \ 102 do { \ 103 struct firewire_comm *fc = (fwe)->fd.fc; \ 104 ether_poll_deregister(ifp); \ 105 fc->set_intr(fc, 1); \ 106 } while(0) \ 107 108static poll_handler_t fwe_poll; 109 110static void 111fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 112{ 113 struct fwe_softc *fwe; 114 struct firewire_comm *fc; 115 116 fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 117 fc = fwe->fd.fc; 118 if (cmd == POLL_DEREGISTER) { 119 /* enable interrupts */ 120 fc->set_intr(fc, 1); 121 return; 122 } 123 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 124} 125#else 126#define FWE_POLL_REGISTER(func, fwe, ifp) 127#define FWE_POLL_DEREGISTER(fwe, ifp) 128#endif 129static void 130fwe_identify(driver_t *driver, device_t parent) 131{ 132 BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent)); 133} 134 135static int 136fwe_probe(device_t dev) 137{ 138 device_t pa; 139 140 pa = device_get_parent(dev); 141 if(device_get_unit(dev) != device_get_unit(pa)){ 142 return(ENXIO); 143 } 144 145 device_set_desc(dev, "Ethernet over FireWire"); 146 return (0); 147} 148 149static int 150fwe_attach(device_t dev) 151{ 152 struct fwe_softc *fwe; 153 struct ifnet *ifp; 154 int unit, s; 155 u_char *eaddr; 156 struct fw_eui64 *eui; 157 158 fwe = ((struct fwe_softc *)device_get_softc(dev)); 159 unit = device_get_unit(dev); 160 161 bzero(fwe, sizeof(struct fwe_softc)); 162 /* XXX */ 163 fwe->stream_ch = stream_ch; 164 fwe->dma_ch = -1; 165 166 fwe->fd.fc = device_get_ivars(dev); 167 fwe->fd.dev = dev; 168 fwe->fd.post_explore = NULL; 169 fwe->eth_softc.fwe = fwe; 170 171 fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM; 172 fwe->pkt_hdr.mode.stream.sy = 0; 173 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 174 175 /* generate fake MAC address: first and last 3bytes from eui64 */ 176#define LOCAL (0x02) 177#define GROUP (0x01) 178 eaddr = &fwe->eth_softc.arpcom.ac_enaddr[0]; 179 180 eui = &fwe->fd.fc->eui; 181 eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP; 182 eaddr[1] = FW_EUI64_BYTE(eui, 1); 183 eaddr[2] = FW_EUI64_BYTE(eui, 2); 184 eaddr[3] = FW_EUI64_BYTE(eui, 5); 185 eaddr[4] = FW_EUI64_BYTE(eui, 6); 186 eaddr[5] = FW_EUI64_BYTE(eui, 7); 187 printf("if_fwe%d: Fake Ethernet address: " 188 "%02x:%02x:%02x:%02x:%02x:%02x\n", unit, 189 eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]); 190 191 /* fill the rest and attach interface */ 192 ifp = &fwe->fwe_if; 193 ifp->if_softc = &fwe->eth_softc; 194 195#if __FreeBSD_version >= 501113 196 if_initname(ifp, device_get_name(dev), unit); 197#else 198 ifp->if_unit = unit; 199 ifp->if_name = "fwe"; 200#endif 201 ifp->if_init = fwe_init; 202 ifp->if_output = ether_output; 203 ifp->if_start = fwe_start; 204 ifp->if_ioctl = fwe_ioctl; 205 ifp->if_mtu = ETHERMTU; 206 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST); 207 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 208 209 s = splimp(); 210#if __FreeBSD_version >= 500000 211 ether_ifattach(ifp, eaddr); 212#else 213 ether_ifattach(ifp, 1); 214#endif 215 splx(s); 216 217 /* Tell the upper layer(s) we support long frames. */ 218 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 219#if __FreeBSD_version >= 500000 220 ifp->if_capabilities |= IFCAP_VLAN_MTU; 221#endif 222 223 224 FWEDEBUG(ifp, "interface created\n"); 225 return 0; 226} 227 228static void 229fwe_stop(struct fwe_softc *fwe) 230{ 231 struct firewire_comm *fc; 232 struct fw_xferq *xferq; 233 struct ifnet *ifp = &fwe->fwe_if; 234 struct fw_xfer *xfer, *next; 235 int i; 236 237 fc = fwe->fd.fc; 238 239 FWE_POLL_DEREGISTER(fwe, ifp); 240 241 if (fwe->dma_ch >= 0) { 242 xferq = fc->ir[fwe->dma_ch]; 243 244 if (xferq->flag & FWXFERQ_RUNNING) 245 fc->irx_disable(fc, fwe->dma_ch); 246 xferq->flag &= 247 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 248 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 249 xferq->hand = NULL; 250 251 for (i = 0; i < xferq->bnchunk; i ++) 252 m_freem(xferq->bulkxfer[i].mbuf); 253 free(xferq->bulkxfer, M_FWE); 254 255 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL; 256 xfer = next) { 257 next = STAILQ_NEXT(xfer, link); 258 fw_xfer_free(xfer); 259 } 260 STAILQ_INIT(&fwe->xferlist); 261 262 xferq->bulkxfer = NULL; 263 fwe->dma_ch = -1; 264 } 265 266 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 267} 268 269static int 270fwe_detach(device_t dev) 271{ 272 struct fwe_softc *fwe; 273 int s; 274 275 fwe = (struct fwe_softc *)device_get_softc(dev); 276 s = splimp(); 277 278 fwe_stop(fwe); 279#if __FreeBSD_version >= 500000 280 ether_ifdetach(&fwe->fwe_if); 281#else 282 ether_ifdetach(&fwe->fwe_if, 1); 283#endif 284 285 splx(s); 286 return 0; 287} 288 289static void 290fwe_init(void *arg) 291{ 292 struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe; 293 struct firewire_comm *fc; 294 struct ifnet *ifp = &fwe->fwe_if; 295 struct fw_xferq *xferq; 296 struct fw_xfer *xfer; 297 struct mbuf *m; 298 int i; 299 300 FWEDEBUG(ifp, "initializing\n"); 301 302 /* XXX keep promiscoud mode */ 303 ifp->if_flags |= IFF_PROMISC; 304 305 fc = fwe->fd.fc; 306#define START 0 307 if (fwe->dma_ch < 0) { 308 for (i = START; i < fc->nisodma; i ++) { 309 xferq = fc->ir[i]; 310 if ((xferq->flag & FWXFERQ_OPEN) == 0) 311 goto found; 312 } 313 printf("no free dma channel\n"); 314 return; 315found: 316 fwe->dma_ch = i; 317 fwe->stream_ch = stream_ch; 318 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 319 /* allocate DMA channel and init packet mode */ 320 xferq->flag |= FWXFERQ_OPEN | FWXFERQ_EXTBUF | 321 FWXFERQ_HANDLER | FWXFERQ_STREAM; 322 xferq->flag &= ~0xff; 323 xferq->flag |= fwe->stream_ch & 0xff; 324 /* register fwe_input handler */ 325 xferq->sc = (caddr_t) fwe; 326 xferq->hand = fwe_as_input; 327 xferq->bnchunk = rx_queue_len; 328 xferq->bnpacket = 1; 329 xferq->psize = MCLBYTES; 330 xferq->queued = 0; 331 xferq->buf = NULL; 332 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 333 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 334 M_FWE, M_WAITOK); 335 if (xferq->bulkxfer == NULL) { 336 printf("if_fwe: malloc failed\n"); 337 return; 338 } 339 STAILQ_INIT(&xferq->stvalid); 340 STAILQ_INIT(&xferq->stfree); 341 STAILQ_INIT(&xferq->stdma); 342 xferq->stproc = NULL; 343 for (i = 0; i < xferq->bnchunk; i ++) { 344 m = 345#if __FreeBSD_version >= 500000 346 m_getcl(M_TRYWAIT, MT_DATA, M_PKTHDR); 347#else 348 m_getcl(M_WAIT, MT_DATA, M_PKTHDR); 349#endif 350 xferq->bulkxfer[i].mbuf = m; 351 if (m != NULL) { 352 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 353 STAILQ_INSERT_TAIL(&xferq->stfree, 354 &xferq->bulkxfer[i], link); 355 } else 356 printf("fwe_as_input: m_getcl failed\n"); 357 } 358 STAILQ_INIT(&fwe->xferlist); 359 for (i = 0; i < TX_MAX_QUEUE; i++) { 360 xfer = fw_xfer_alloc(M_FWE); 361 if (xfer == NULL) 362 break; 363 xfer->send.spd = tx_speed; 364 xfer->fc = fwe->fd.fc; 365 xfer->retry_req = fw_asybusy; 366 xfer->sc = (caddr_t)fwe; 367 xfer->act.hand = fwe_output_callback; 368 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 369 } 370 } else 371 xferq = fc->ir[fwe->dma_ch]; 372 373 374 /* start dma */ 375 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 376 fc->irx_enable(fc, fwe->dma_ch); 377 378 ifp->if_flags |= IFF_RUNNING; 379 ifp->if_flags &= ~IFF_OACTIVE; 380 381 FWE_POLL_REGISTER(fwe_poll, fwe, ifp); 382#if 0 383 /* attempt to start output */ 384 fwe_start(ifp); 385#endif 386} 387 388 389static int 390fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 391{ 392 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 393 struct ifstat *ifs = NULL; 394 int s, error, len; 395 396 switch (cmd) { 397 case SIOCSIFFLAGS: 398 s = splimp(); 399 if (ifp->if_flags & IFF_UP) { 400 if (!(ifp->if_flags & IFF_RUNNING)) 401 fwe_init(&fwe->eth_softc); 402 } else { 403 if (ifp->if_flags & IFF_RUNNING) 404 fwe_stop(fwe); 405 } 406 /* XXX keep promiscoud mode */ 407 ifp->if_flags |= IFF_PROMISC; 408 splx(s); 409 break; 410 case SIOCADDMULTI: 411 case SIOCDELMULTI: 412 break; 413 414 case SIOCGIFSTATUS: 415 s = splimp(); 416 ifs = (struct ifstat *)data; 417 len = strlen(ifs->ascii); 418 if (len < sizeof(ifs->ascii)) 419 snprintf(ifs->ascii + len, 420 sizeof(ifs->ascii) - len, 421 "\tch %d dma %d\n", 422 fwe->stream_ch, fwe->dma_ch); 423 splx(s); 424 break; 425#if __FreeBSD_version >= 500000 426 default: 427#else 428 case SIOCSIFADDR: 429 case SIOCGIFADDR: 430 case SIOCSIFMTU: 431#endif 432 s = splimp(); 433 error = ether_ioctl(ifp, cmd, data); 434 splx(s); 435 return (error); 436#if __FreeBSD_version < 500000 437 default: 438 return (EINVAL); 439#endif 440 } 441 442 return (0); 443} 444 445static void 446fwe_output_callback(struct fw_xfer *xfer) 447{ 448 struct fwe_softc *fwe; 449 struct ifnet *ifp; 450 int s; 451 452 fwe = (struct fwe_softc *)xfer->sc; 453 ifp = &fwe->fwe_if; 454 /* XXX error check */ 455 FWEDEBUG(ifp, "resp = %d\n", xfer->resp); 456 if (xfer->resp != 0) 457 ifp->if_oerrors ++; 458 459 m_freem(xfer->mbuf); 460 fw_xfer_unload(xfer); 461 462 s = splimp(); 463 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 464 splx(s); 465 466 /* for queue full */ 467 if (ifp->if_snd.ifq_head != NULL) 468 fwe_start(ifp); 469} 470 471static void 472fwe_start(struct ifnet *ifp) 473{ 474 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 475 int s; 476 477 FWEDEBUG(ifp, "starting\n"); 478 479 if (fwe->dma_ch < 0) { 480 struct mbuf *m = NULL; 481 482 FWEDEBUG(ifp, "not ready\n"); 483 484 s = splimp(); 485 do { 486 IF_DEQUEUE(&ifp->if_snd, m); 487 if (m != NULL) 488 m_freem(m); 489 ifp->if_oerrors ++; 490 } while (m != NULL); 491 splx(s); 492 493 return; 494 } 495 496 s = splimp(); 497 ifp->if_flags |= IFF_OACTIVE; 498 499 if (ifp->if_snd.ifq_len != 0) 500 fwe_as_output(fwe, ifp); 501 502 ifp->if_flags &= ~IFF_OACTIVE; 503 splx(s); 504} 505 506#define HDR_LEN 4 507#ifndef ETHER_ALIGN 508#define ETHER_ALIGN 2 509#endif 510/* Async. stream output */ 511static void 512fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp) 513{ 514 struct mbuf *m; 515 struct fw_xfer *xfer; 516 struct fw_xferq *xferq; 517 struct fw_pkt *fp; 518 int i = 0; 519 520 xfer = NULL; 521 xferq = fwe->fd.fc->atq; 522 while (xferq->queued < xferq->maxq - 1) { 523 xfer = STAILQ_FIRST(&fwe->xferlist); 524 if (xfer == NULL) { 525 printf("if_fwe: lack of xfer\n"); 526 return; 527 } 528 IF_DEQUEUE(&ifp->if_snd, m); 529 if (m == NULL) 530 break; 531 STAILQ_REMOVE_HEAD(&fwe->xferlist, link); 532#if __FreeBSD_version >= 500000 533 BPF_MTAP(ifp, m); 534#else 535 if (ifp->if_bpf != NULL) 536 bpf_mtap(ifp, m); 537#endif 538 539 /* keep ip packet alignment for alpha */ 540 M_PREPEND(m, ETHER_ALIGN, M_DONTWAIT); 541 fp = &xfer->send.hdr; 542 *(u_int32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr; 543 fp->mode.stream.len = m->m_pkthdr.len; 544 xfer->mbuf = m; 545 xfer->send.pay_len = m->m_pkthdr.len; 546 547 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) { 548 /* error */ 549 ifp->if_oerrors ++; 550 /* XXX set error code */ 551 fwe_output_callback(xfer); 552 } else { 553 ifp->if_opackets ++; 554 i++; 555 } 556 } 557#if 0 558 if (i > 1) 559 printf("%d queued\n", i); 560#endif 561 if (i > 0) 562 xferq->start(fwe->fd.fc); 563} 564 565/* Async. stream output */ 566static void 567fwe_as_input(struct fw_xferq *xferq) 568{ 569 struct mbuf *m, *m0; 570 struct ifnet *ifp; 571 struct fwe_softc *fwe; 572 struct fw_bulkxfer *sxfer; 573 struct fw_pkt *fp; 574 u_char *c; 575#if __FreeBSD_version < 500000 576 struct ether_header *eh; 577#endif 578 579 fwe = (struct fwe_softc *)xferq->sc; 580 ifp = &fwe->fwe_if; 581#if 0 582 FWE_POLL_REGISTER(fwe_poll, fwe, ifp); 583#endif 584 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 585 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 586 fp = mtod(sxfer->mbuf, struct fw_pkt *); 587 if (fwe->fd.fc->irx_post != NULL) 588 fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld); 589 m = sxfer->mbuf; 590 591 /* insert new rbuf */ 592 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 593 if (m0 != NULL) { 594 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 595 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 596 } else 597 printf("fwe_as_input: m_getcl failed\n"); 598 599 if (sxfer->resp != 0 || fp->mode.stream.len < 600 ETHER_ALIGN + sizeof(struct ether_header)) { 601 m_freem(m); 602 ifp->if_ierrors ++; 603 continue; 604 } 605 606 m->m_data += HDR_LEN + ETHER_ALIGN; 607 c = mtod(m, char *); 608#if __FreeBSD_version < 500000 609 eh = (struct ether_header *)c; 610 m->m_data += sizeof(struct ether_header); 611#endif 612 m->m_len = m->m_pkthdr.len = 613 fp->mode.stream.len - ETHER_ALIGN; 614 m->m_pkthdr.rcvif = ifp; 615#if 0 616 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n" 617 "%02x %02x %02x %02x %02x %02x\n" 618 "%02x %02x %02x %02x\n" 619 "%02x %02x %02x %02x\n" 620 "%02x %02x %02x %02x\n" 621 "%02x %02x %02x %02x\n", 622 c[0], c[1], c[2], c[3], c[4], c[5], 623 c[6], c[7], c[8], c[9], c[10], c[11], 624 c[12], c[13], c[14], c[15], 625 c[16], c[17], c[18], c[19], 626 c[20], c[21], c[22], c[23], 627 c[20], c[21], c[22], c[23] 628 ); 629#endif 630#if __FreeBSD_version >= 500000 631 (*ifp->if_input)(ifp, m); 632#else 633 ether_input(ifp, eh, m); 634#endif 635 ifp->if_ipackets ++; 636 } 637 if (STAILQ_FIRST(&xferq->stfree) != NULL) 638 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch); 639} 640 641 642static devclass_t fwe_devclass; 643 644static device_method_t fwe_methods[] = { 645 /* device interface */ 646 DEVMETHOD(device_identify, fwe_identify), 647 DEVMETHOD(device_probe, fwe_probe), 648 DEVMETHOD(device_attach, fwe_attach), 649 DEVMETHOD(device_detach, fwe_detach), 650 { 0, 0 } 651}; 652 653static driver_t fwe_driver = { 654 "fwe", 655 fwe_methods, 656 sizeof(struct fwe_softc), 657}; 658 659 660DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0); 661MODULE_VERSION(fwe, 1); 662MODULE_DEPEND(fwe, firewire, 1, 1, 1); 663